Ten-lined June Beetle
MODERATEPolyphylla decemlineata
Overview
Not sure what this was, at first thought a potato bug, but looking at closer realized it was not. Not the kind of June bug I am used to seeing. Pretty sure this a Ten-lined Beetle, got this photo with my Android camera using the magnifying glass app. Better photo than with my Nikon P950. After reading about this beetle and the Long Haired Beetle, I touched the protonum on this beetle and it is smooth.
- Type
- Insect
- Severity
- MODERATE
- Source
- iNaturalist
Symptoms
Geographic Spread
Treatments
Targeted Insecticide Application
Apply appropriate insecticide following label directions. Timing is critical — treat during the vulnerable larval or adult emergence stage for maximum effectiveness.
Biological Control Agents
Introduce or encourage natural predators and parasitoids. Options include releasing predatory beetles, parasitic wasps, or applying Bt (Bacillus thuringiensis) for caterpillar pests.
Infested Material Removal
Prune and destroy infested branches and plant material. Remove fallen debris that may harbor eggs or larvae. Dispose of material away from healthy trees.
Recommended Products & Tools
Helpful supplies for managing Ten-lined June Beetle. Always read and follow label directions, and confirm a diagnosis before treating.
Knocks down soft-bodied pests like aphids, mites, and scale crawlers.
Smothers overwintering eggs and crawlers; dormant or summer rates.
Soil-applied protection taken up by the tree for season-long control.
Sharp, clean cuts to remove affected wood — a tree-care essential.
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Frequently Asked Questions
What is Ten-lined June Beetle?
Not sure what this was, at first thought a potato bug, but looking at closer realized it was not. Not the kind of June bug I am used to seeing. Pretty sure this a Ten-lined Beetle, got this photo with my Android camera using the magnifying glass app. Better photo than with my Nikon P950. After reading about this beetle and the Long Haired Beetle, I touched the protonum on this beetle and it is smooth.
What are the symptoms of Ten-lined June Beetle?
Where is Ten-lined June Beetle currently found?
Ten-lined June Beetle is currently active in Utah, California, Colorado, Nebraska, New Mexico, Arizona, Idaho. It has been reported in 7 total states across the United States.
How do I treat Ten-lined June Beetle?
Treatment options for Ten-lined June Beetle include: Targeted Insecticide Application, Biological Control Agents, Infested Material Removal. Treatment approaches may include chemical, biological, cultural, and mechanical methods depending on the severity and context.